Ques:- A certain type of mixture is prepared by mixing brand A at Rs.9 a kg. with brand B at Rs.4 a kg. If the mixture is worth Rs.7 a kg., how many kgs. of brand A are needed to make 40kgs. of the mixture?
Recent Answer : Added by Admin On 2022-09-29 17:39:56:
Answer:
24
Step-by-step explanation:
A + B = 40.
And at Rs 7 a kg for 40 kg, you want a total of Rs.280.
So the second equation is 9A + 4B = 280
From the first equation: B = 40 – A
and sub into the second equation:
9A + 4(40-A) = 280
9A + 160 – 4A = 280
5A = 120
A = 24.
And you should check: B should equal 40-24 = 16. Check with the final equation: 9*24 + 4*16 = 216 + 64 = 280. So it works.
Your answer, of course, is A = 24
Ques:- Why the rotation of fan is anticlockwise all over the world?
Recent Answer : Added by Admin On 2022-09-27 18:22:41:
It is due to the counter clockwise motion of the motor. The motor rotates in the counter clockwise direction the blades of the fan are attached to the motor hence the blades rotates in the anti clockwise direction. So it is due to the motor rotation the fan rotates in counter clockwise direction.
Ques:- A sum of money is put out at compound interest for 2 years at 20%. It would fetch Rs.482 more if the interest were payable half-yearly, then it were pay able yearly. Find the sum.
Ques:- YOUR COMPUTER KNOWLEDGE
Ques:- Why do I want to join this bank?
Ques:- Members in the family
Ques:- One of Mr. Horton,his wife,their son,and Mr. Horton's mother is a doctor and another is a lawyer.a)If the doctor is younger than the lawyer, then the doctor and the lawyer are not blood relatives.b)If the doctor is a woman, then the doctor and the lawyer are blood relatives.c)If the lawyer is a man, then the doctor is a man.Whose occupation you know?
Ques:- If 12 men can reap 120 acres of land in 36 days, how many acres of land can 54 men reap in 54 days?
Recent Answer : Added by Nandini Gupta On 2021-10-22 09:12:36:
810
Ques:- ?Why your marks decreased in college?
Ques:- Can you tell us something about your family and your growing up days?
Ques:- Pointing to a photograph, a person tells his friend, “She is the granddaughter of the elder brother of my father.” How is the girl in the photograph related to his man?
Recent Answer : Added by N.Madhu Charan On 2022-03-09 16:35:25:
Neice
Ques:- Information regarding family members
Ques:- Given a collection of points P in the plane , a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P)….
Ques:- A person with some money spends 1/3 for cloths, 1/5 of the remaining for food and 1/4 of the remaining for travel. He is left with Rs 100/- How much did he have with him in the begining?
Recent Answer : Added by Admin On 2020-05-17 12:00:38:
ans: 250 rs exactly
Ques:- If Log2 x – 5 Log x + 6 = 0, then what would the value / values of x be?
Ques:- A and B can do a work in 5 days and 10 days respectively. A starts the work and B joins him after 2 days. In how many days can they complete the remaining work?
Recent Answer : Added by Faizan On 2022-08-14 16:28:54:
4
Ques:- Projects done in college, my extracurricular activities.
Ques:- How does your experience line up with the requirements of the company?
Ques:- There is a room with a door (closed) and three light bulbs. Outside the room there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door you can't change them. Identify each switch with its bulb.
Recent Answer : Added by DK BOSS On 2021-07-30 16:27:15:
Turn on a switch and leave it for some ten minutes. Turn it off, turn a second one on and open the door and go into the room. The glowing bulb corresponds to second switch. The bulb that is hot corresponds to first switch, as it was turned on for ten minutes and have heated up. The cold and not-glowing bulb corresponds to the third switch
Ques:- Pointing to a man, a women said,”His mother is the only daughter of my mother.” How is the woman related to the man?
Recent Answer : Added by Admin On 2022-09-29 16:05:58:
mother
Ques:- What do you feel has been your greatest work-related accomplishment?
Ques:- Explain a database in three sentences to your eight-year-old nephew
Ques:- Animesh and Anand together got a profit of Rs. 9,600 and they distributed between themselves in the ratio of 5 : 7. What is the share of Animesh?
Recent Answer : Added by kalyani nanaware On 2022-08-14 16:43:05:
share= 5:7
i.e.,
=9600*5/12
= 4000
Ques:- A football team played 60 matches out of which 30% were won by them. If they start winning all the next matches after how many matches will the average winning rate be 50% ?
Recent Answer : Added by Suman On 2021-10-07 15:41:23:
Matches played: 60.
Matches won: 30% of 60 => (60*(30/100)) = 18 matches.
Iterative approach:
On adding 1 to matches played and matches won, on every iteration until the win percentage gets to 50. So
19 / 61 = 0.3114754098360656
20 / 62 = 0.3225806451612903
21 / 63 = 0.3333333333333333
22 / 64 = 0.34375
…
…
…
…
Similarly,
41 / 83 = 0.4939759036144578
42 / 84 = 0.5
So, after 60th match 24 more matches has to be played and won to get 50% average winning rate.
Ques:- A can do a piece of work in 12 days. When he had worked for 2 days B joins him. If the complete work was finished in 8 days. In how many days B alone can finish the work?
Recent Answer : Added by Admin On 2022-09-29 15:25:12:
The work done by A in 8 days is = 8/ 12 = 2/3
Means A alone completes 2/3 part of work.
Remaining work which is (1–2/3) = 1/3 is completed by B in 8–2 = 6 days
So the complete work done by B in 6/(1/3) = 18 days.
B alone can complete the work in 18 days.
Ques:- A local inner class may be final or abstract ?
Ques:- What made me think about joining the social sector?
Ques:- Where was the capital of Kanishka?
A. Purushapura
B. Kannauj
C. Taxila
D. Kandhar
Ques:- Which state in India has the largest coastline?
A. Orissa
B. Gujarat
C. Tamilnadu
D. Andhra Pradesh
Recent Answer : Added by Parth Satish Laturia On 2022-08-14 16:44:46:
Answer:
24
Step-by-step explanation:
A + B = 40.
And at Rs 7 a kg for 40 kg, you want a total of Rs.280.
So the second equation is 9A + 4B = 280
From the first equation: B = 40 – A
and sub into the second equation:
9A + 4(40-A) = 280
9A + 160 – 4A = 280
5A = 120
A = 24.
And you should check: B should equal 40-24 = 16. Check with the final equation: 9*24 + 4*16 = 216 + 64 = 280. So it works.
Your answer, of course, is A = 24